Research on modular multilevel converter based STATCOM

Author

Yang, Xiaofeng ; Li, Jianghong ; Fan, Wenbao ; Wang, Xiaopeng ; Zheng, Trillion Q.

Author_Institution

Sch. of Electr. Eng., Beijing Jiaotong Univ., Beijing, China

fYear

2011

fDate

21-23 June 2011

Firstpage

2569

Lastpage

2574

Abstract

A new modular multilevel converter (MMC) based static synchronous compensator (STATCOM) is proposed and hereafter called M-STATCOM. The new shunt compensator, features with the characteristics such as high modularity, availability, low generation of harmonics, etc., is well suitable for medium- or high-voltage utility grid without line-frequency transformers. M-STATCOM can not only be controlled in static var generating condition for reactive power compensation purpose, but also be suitable for the comprehensive mitigation of all the power quality problems under the three-phase unbalanced power systems. The structural characteristics and operating principles of M-STATCOM for both static var generating condition and comprehensive compensating condition are analyzed in detail. Moreover, two corresponding control schemes were proposed. The effectiveness of the proposed control strategy and feasibility of analysis is validated by the simulation results.

Keywords

power convertors; power grids; power supply quality; reactive power; static VAr compensators; M-STATCOM; high-voltage utility grid; medium-voltage utility grid; modular multilevel converter; power quality problems; reactive power compensation purpose; static synchronous compensator; static var generating condition; three-phase unbalanced power systems; Automatic voltage control; Capacitors; Control systems; Leg; Power quality; Reactive power; STATCOM; modular multilevel converter; negative-sequence balancing; power unit; static var generation;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications (ICIEA), 2011 6th IEEE Conference on

Conference_Location

Beijing

ISSN

pending

Print_ISBN

978-1-4244-8754-7

Electronic_ISBN

pending

Type

conf

DOI

10.1109/ICIEA.2011.5976026

Filename

5976026